Sony SRS-XB30 Help Manual page 31

If you touch a device on the speaker, the device terminates the BLUETOOTH connection with the current device (NFC-compatible headset, etc.),
and connects with the speaker (One-touch connection switching).
Note
When an audio cable is connected to the speaker's AUDIO IN jack while the speaker and the BLUETOOTH device have been connected via
BLUETOOTH connection, sound from the BLUETOOTH-connected device is not output from the speaker (the hands-free function is available). To
listen to music from the BLUETOOTH device, disconnect the audio cable from the speaker's AUDIO IN jack.
If your device is a type that goes into standby mode in response to magnetic force, it may not be able to be connected by NFC.
When using the Speaker Add function or Wireless Party Chain function, touch the speaker where the
device cannot make a BLUETOOTH connection with the speaker where the
Related Topic
How to make a wireless connection with BLUETOOTH devices
Disconnecting the NFC-compatible device by One-touch (NFC)
Switching devices by One-touch (NFC)
Listening to music of a device via BLUETOOTH connection
4-694-130-11(2) Copyright 2017 Sony Corporation
(BLUETOOTH) indicator flashes. The
(BLUETOOTH) indicator turns off.
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